"Ne worse of worst extended
With vilest tortures let my life be ended."
She means, be racked to death. Malone read, as I do, Nay, worst of worse. 'Nay' was sometimes spelt ne. "Is't true? Ne, let him run into the war."—Chapman, All Fools, i.
"Youth, beauty, virtue, wisdom, courage all."
Warburton also supplied virtue, but after 'wisdom.' In the next scene but one, the King speaks again of her virtue.
"Ay, by my sceptre and my hopes of heaven."
This is the correction of Thirlby; the folio has help for 'heaven,' regardless of rime.